Digital clock



FIG. 1 is a right front perspective view of a digital clock showing mynew design;

FIG. 2 is a left rear perspective view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof.

The ornamental design for a digital clock, substantially as shown anddescribed.